Matrix and method of manufacturing the same



A. H. HEDLY 2 Sheets-Sheet l MATRIX AND METHOD OF MANUFACTURING THE SAMEJan. 28, 1936.

Filed Nov. 5, 1954 Jan. 28, 1936. H, HEDLY 2,028,978

MATRIX AND METHOD OF MANUFACTURING THE SAME Filed Nov. 5, 1954 2Sheets-Sheet 2 W2 1 9. vz dja jdefiibrr draw/50% 5M1? Patented Jan. 28,1936 PATENT OFFICE MATRIX AND METHOD OF MANUFACTUR- ING THE SAME ArthurH. Hedly, Chicago,

low poration of Illinois Typograph Company,

111., assignor to Lud- Chicago, 111., a cor- Appiication November 5,1934, Serial No. 751,630 15 Claims. (Cl. 101-401.2)

My invention relates more especially to matrices used in the productionof printing-faceequipped bodies, particularly, though not exclusively,line slugs and involving in the manufacture thereof, the formation ofthe matrices by forcing into matrix blanks, as for example and commonlyof brass, punches provided with punch surfaces conforming to the formsof type faces to be cast in the matrices.

1o Considerable diificulty has been experienced in the commercialproduction of driven matrices formed from matrix blanks of the desiredhard material, commonly brass, due to the reluctance to flow of themetal of the matrix blank into the 15 counters or grooves of the punch,particularly when such counters or grooves are relatively narrow anddeep, resulting in the printing faces of the bodies, cast from saidmatrices, presenting such low height shallow counters, that ink re- 20ceived therein will transfer to the paper in the printing operation andproduce an imperfect printing impression.

My object is to overcome the objection above set forth and provide forthe production of count- 25 ers or ribs on the matrices of such heightas to insure against the transfer to the paper of ink from the countersor grooves in the printing face portions of the printing-face-equippedbodies made from the matrices, even where these count- 30 ers arerelatively narrow, while permitting of the manufacture of the bodies ofthe matrices including the portions thereof in which the matrixcavitiesare to be formed, of desirable non-corrodable metal, as for examplebrass commonly used 35 in the production of type matrices and which isof suflicient hardness to withstand abuse in handling.

Referring to the accompanying drawings:

Figure 1 is a broken plan view of matrix-blank 40 holding mechanismwhich may be used for holding the blank during the driving operation.

Figure 2 is a broken sectional view taken at the irregular line 2-2 onFig. l and viewed'in the direction of the arrow.

Figure 3 is a face View of one form of matrix embodying my invention andproduced in accordance with my invention.

Figure 4 is a section taken at theline 44 on Fig. 3 and viewed in thedirection of the arrows. 50 Figure 5 is a view like Fig. 3 of anotherembodiment of the invention and produced in accordance with my method.

Figure 6 is a section taken at the line 66 on Fig. 5 and viewed in thedirection'of the arrows.

.55 1 Figure 7 is a viewllike Fig. 3 of another embodiment of theinvention and produced in accordance with my method.

Figure 8 is an end view of the matrix of Fig. 7. Figure 9 is a bottomplan view of another embodiment of the invention and produced in ac- 5cordance with my method.

Figure 10 is an edge view of the matrix of Fig. 9.

Figure 11 is a bottom plan view of still another embodiment of theinvention and produced in accordance with my method; and 10 Figure 12, asection taken at the line |2-|2 on Fig. 11 and viewed in the directionof the arrows.

In accordance with my invention the body of the matrix blank, andincluding the portion there- 15 of in which the matrix cavity is to beformed, is made of such metal as to be suitable for the driving thereinof the matrix cavity and the mold ing in this cavity of type metal, andbe capable of withstanding abuse in handling, it being preferred thatthe metal used be brass as now commonly used for the making of matrixblanks; and

the part of the blank presenting the counterforming portion, orportions, and provided as a relatively thin section, backed by hardermetal, such as for example steel, forming an anvil resulting in suchenforced augmented flow of the softer metal of the blank into thecounter portions of the punch in the operation of driving the matrixcavity, as to insure the forming of the desired high counters in thematrix cavity.

According to the embodiment of the invention shown in Figs. 3 and 4which illustrate a matrix for the casting of a capital M having sharpcounters 12, the body of the matrix blank from which the matrix referredto is formed, is provided with a recess 13 in the form of a boreextending from side to side thereof, as represented, to cause the blankto present a relatively thin web section I 4 extending along the centerof the matrix blank, the recess l3 containing a closely-fitting roundbar l5 of metal harder than the body of the matrix blank, as for examplesteel, which extends throughout substantially the full length of therecess 13 and forms an anvil functioning in the driving operation asabove stated.

In the embodiment of the invention illustrated in Figs. 5 and 6 whereina matrix for casting a capital B is illustrated having small countersrepresented at [6, the body of the matrix blank from which the matrixshown is formed is provided with a recess I! in the form of a boreextending from end to end thereof as represented to cause the blank topresent a relatively thin web section l8 extending along the center ofthe matrix, the

flrecess 11 containing a closely fitting round bar I9 V V of metalharder than the body of the metal of the matrix'bl'ank, as for examplesteel, which'extends' throughout substantially the "full length 'of therecess and forms an anvil in the driving operation.

In' the embodiment of the invention illustrated 1 f in Figs. .7 and 8,wherein a matrix for casting a cap'ital W is provided havingjnarrowcounters.. extending over a large area, the body of the matrix blank, isprovided with two parallel recesses 21 v inthe form ,of' bores extendingfromend to ,end' i of the matrix -blank,- these recesses containing 5 iclosely fitting round bars 22 of metal harder than the body ofthematrixblank, as for example steel,

I the matrix blank the provision of the recessesjljl' asstated causinglike sections on which portions of the counters zil are formedandthebars 22' serving" tcfv anvil of the matrix blank is formed, as forexample function in the. driving. operation.

The, embodiment of the invention A illustrated V 1n Figsf9arid l0contemplates the forming of the 'gbodyportion of thematrix blank, with arecess 23in its backjsurface, in the form of a groove, or channel,thereby providing a relatively thin web section 24 in which the matrixcavity is produced;

"and locating in the recess 23 a block 25 of harder metal than the metalof whichthe body portion stehWhichfunctions asan anvil in the matrix-.driving operation. 7 I I f 'In accordance with the. embodiment of ,theinvention shown in Figs. 11 and 12 the body of the.

" matrix blank is annularly recessed at its back surface, as representedat 26,:to cause the matrixcavity-forming portion of the matrix to beinthe 'form 'ofa thin web 21, the recess 26 containing a circular block28 functioning asin the case of the I block 250i Figs. 9 and 10.

.; It :is necessary that the matrix blank, in the punching operation;be. confined against lateral and downward deformation at its side andbottom surfaces, respectively. 7 This may be accomplished in anydesirableway as for example by the means shown in Figs. '1 and2 whichare of a construction well known in the art, andtherefore'a brief def.

scription thereof will suffice.

by screws, this block lhaving'one cornerthereof recessed as representedat 3|, the'walls .of this I recessand represented at32and 33 extendingat a"right angle to each other and being lined with 7 bars 34 and35, theblock'30, lined as stated, connon 31, is

stituting-onej aw of a chuck in which the matrix 7: blank is to be held.The other jaw of this chuck, 1. representedat 36 and formed with an apexporguidingly confined at its outer end in parallel guides 38, sodisposed that the jaw is movable from the closed position shown inFig.1;

into. open position, and vice, versa. I

The extreme apexportion 31 of the jaw 36 con-V tains. a recess 39, theside wall 40 of "which is 7 parallel withthe inner face of the plate34,- the recess 39 containing a block 4| held in place by a screw device42, the outer face of the block 4| 7 being'parallel with the inner faceof the bar 35.

I'Ihereis thus provided between :the bars 34 and 35, thewall40 and face43 of the block 4|, a recess 44 in which the matrix blank hereinrepresented at 4,5, is located.

. 'rigid'foundation which, in thecase of the particular machine shown,is a hardened'steel plate 46 to present relativelythin web-s What Iclaim as, new, and desireto secure. by

"LettersPatenuisE' 1* .1. 'The methodof forming' matrices', which con+sists inproviding a metal matrix The mechanism shown comprisesabed 29superpos' ed by a block 30 rigidly secured theretoas Thelbottoin ofthematrix blank rests upon a by any suitable mechanism asifor e'xample bypneumaticmechanism (-not'sh'own), to firmly clamp the blank '45, theside walls of the recess "44 and the ;po rti'on; cf' the machineuponiwhich the blank rests serving to prevent freelateral and downwardflow of the metal of the matrix blank 5 in the operation .of'forcing'thepunch into it to wformthematrix cavity.

' While I have illustrated and described certain 'waysinwhich myimproved method may be prac;-

ticed and certain embodiments. of my inventiomIf "do not 'wish'to beunderstood as intending to limit" 20 it gtheretofas .1 the" method may;be practiced fin other ways andthe constructions shown variouslymodified and-altered;withoutdeparting from the V spirit of my invention.

body the portionthereofqin which the matrix cavityiis to'be 5 formedcomprising a relatively thin websection form'inga'portion only of saidbody, backing said 1 web-section'with material harderthan that form 7ing said body, and -forcingja matrix-forming punch'againstsaid portionto form the'matrix; cavity therein; .j

' 3. The methodtof airingnaaice tnehaao sists in providing a metalmatrix body, recessing' said body between its upper and lower-surfacesadjacent theportionthereof in which the matrix 56 cavity is tobeform'edito cause said portionto comprise'a relatively thin websection, providing in the recessed portion off sai'dbody backing? forsaid web-section comprising material harder than wthatforming saidbody,'and forcing a vmatrix- '5'5": forming punch against saidrportionto form the ,matrix cavity therein.

4. The inethod of forming matrices whiclicone V sists in providing ametal matrix body; boring said body between its'upper andlowersurfaces'ad- 60.

jacent the portion thereofin' which the m'atrix cavityistobe formedtocause said portionito comprise a relatively thin web section; providingin the bored portion of saidbody backing'for said lweb-sec'tioncomprising material harder than that 65 V forining said body, and.forcing amatrixforming punch against said portion toform the matrixcavity therein.

' 5. The methodof forming matrices which'consists inproviding a inetalmatrixbodyhaving 70 V substantially parallel .recesses; between itsupper and lower surfaces adjacent the portion; thereof in which thematrix cavity vis to beformed to ,cause 'saidpqrtion to comprise arelatively tl iin web-section, providing infs'aid recesses backingfor7'5 r 7 4 I 7 35 2. The'me'thod'of forming matrices whichicon' sists inproviding a metaltmatrix body recessed said web-section comprisingmaterial harder than that forming said body, and forcing a matrixformingpunch against said portion to form the matrix cavity therein.

6. The method of forming matrices which consists in providing a metalmatrix body recessed at its back surface to cause the portion in whichthe matrix cavity is to be formed to comprise a relatively thinweb-section, providing, in the recess in said body, backing for saidweb-section comprising material harder than that forming said body, andforcing a matrix-forming punch against said portion to form the matrixcavity therein.

7. The method of forming matrices which consists in providing a metalmatrix body having a portion integral therewith in which the matrixcavity is to be formed comprising a relatively thin web section, backingsaid web section with material harder than that forming said body, andforcing a matrix-forming punch against said portion to form the matrixcavity therein.

8. A matrix blank formed of a body the matrixcavity portion of whichcomprises a relatively thin web-section forming a portion only of saidbody integral therewith, and backing for said web-section formed ofmaterial harder than that forming said web-section.

9. A matrix blank formed of a body recessed between its upper and lowersurfaces adjacent its matrix-cavity portion to cause said portion tocomprise a relatively thin web-section and backing in said recess forsaid web-section formed of material harder than that forming saidweb-section.

10. A matrix blank formed of a body having substantially parallelrecesses between its upper and lower surfaces adjacent its matrix-cavityportion to cause said portion to comprise a relatively thinweb section,and backing in said recesses for said web section formed of materialharder than that forming said web section.

11. A matrix blank formed of a body recessed at its back surface tocause its matrix cavity portion to comprise a relatively thinweb-section and backing in said recess for said web-section formed ofmaterial harder than that forming said websection.

12. A matrix the body, including the matrixcavity forming portion, ofwhich is formed integrally of one kind of metal, said portion comprisinga relatively thin web-section, and backing for and substantiallycoextensive with said websection formed of material harder than thatforming said web-section.

13. A matrix formed of a body having a relatively thin web sectionintegral therewith and in which the matrix cavity is provided, andbacking for and substantially coextensive with said web section formedof material harder than that forming said web section.

14. A matrix comprising, in combination, a matrix body formed with arelatively thin portion and having a recess below said portion, saidthin portion having a matrix cavity formed therein, and a backing ofmaterial harder than that of which said body is formed contained in andcompletely filling said recess.

15. A matrix comprising, in combination, a matrix body having theimpression receiving characteristics of brass comprising a relativelythin shell presenting a recess opening at the rear thereof and having amatrix cavity formed therein, and a block of material having thedeformation resistant characteristics of steel housed in and contactingsubstantially the entire surfaces of said recess to form a backing forsaid matrix cavity carrying portion.

ARTHUR H. HEDLY.

